Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsPMICsPMIC - lighting/front end device controller HID lamp controller SOIC 28 Surface-mount

UCC2305

UCC3305

BLOCK DIAGRAM

SLUS297B - SEPTEMBER 1995 - REVISED APRIL 2004

•

Regulates Lamp Power

•

Compensates For Lamp

Temperature

•

Fixed Frequency Operation

•

Current Mode Control

•

Overcurrent Protected

•

Overvoltage Shutdown

•

Open and Short Protected

•

High Current FET Drive Output

•

Operates Over Wide Battery

Voltage Range: 5V to 18V

The UCC3305 integrates all of the functions required to control and drive one

HID lamp. The UCC3305 is tailored to the demanding, fast turn-on requirements

of automobile headlamps, but is also applicable to all other lighting applications

where HID lamps are selected. HID lamps are ideal for any lighting applications

that can benefit from very high efficiency, blue-white light color, small physical

lamp size, and very long life.

The UCC3305 contains a complete current mode pulse width modulator, a lamp

power regulator, lamp temperature compensation, and total fault protection.

Lamp temperature compensation is critical for automobile headlamps, because

without compensation, light output varies dramatically from a cold lamp to one

that is fully warmed up.

The UCC2305 is tested for full performance with ambient temperature

from –40°C to +105°C while the UCC3305 is tested with ambient temperature

from 0°Cto+70°C. The UCC3305 is available in a 28 pin small-outline, surface

mount plastic package (SOIC).

HID Lamp Controller

FEATURES DESCRIPTION

UDG-94091-1

application

INFO

available

Summary of content (14 pages)

PAGE 1
application INFO available UCC2305 UCC3305 HID Lamp Controller FEATURES DESCRIPTION • Regulates Lamp Power • Compensates For Lamp Temperature • Fixed Frequency Operation • Current Mode Control The UCC3305 integrates all of the functions required to control and drive one HID lamp. The UCC3305 is tailored to the demanding, fast turn-on requirements of automobile headlamps, but is also applicable to all other lighting applications where HID lamps are selected.
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UCC2305 UCC3305 ABSOLUTE MAXIMUM RATINGS CONNECTION DIAGRAM VCC Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.0V BOOST Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 12.0V PWMOUT Current, Peak . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±1.0A PWMOUT Energy, Capacitive Load . . . . . . . . . . . . . . . . . 5.0µJ Input Voltage, Any Input. . . . . . . . . . . . . . . . . . –0.3V to +10.0V Output Current, QOUT, QOUT, FLT . . . . . . . . . . . . .
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UCC2305 UCC3305 ELECTRICAL CHARACTERISTICS (cont.) Unless otherwise stated, VCC = 6.6V, ISET = 100kΩ to GND, ADJ = 100kΩ to GND, OSC = 200pF to GND, BAT = 4V, LOADISENSE connected to LPOWER, VOUTSENSE = 0.666V, BOOST = 10.5V, COMP connected to FB through a 100kΩ resistor, –40°C
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UCC2305 UCC3305 ELECTRICAL CHARACTERISTICS (cont.) Unless otherwise stated, VCC = 6.6V, ISET = 100kΩ to GND, ADJ = 100kΩ to GND, OSC = 200pF to GND, BAT = 4V, LOADISENSE connected to LPOWER, VOUTSENSE = 0.666V, BOOST = 10.5V, COMP connected to FB through a 100kΩ resistor, –40°C
PAGE 5
UCC2305 UCC3305 PIN DESCRIPTIONS (cont.) to normal operation is accomplished by the rise of the WARMUPC capacitor. DIVPAUSE: The QOUT and QOUT outputs can be used to switch lamp polarity in an AC ballast. It is important to stop polarity switching when the lamp is being lit, so that the arc across the electrodes can form in the correct place. Pulling high on DIVPAUSE stops the internal divider which generates the QOUT and QOUT signals, and thereby freezes the QOUT and QOUT signals.
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UCC2305 UCC3305 PIN DESCRIPTIONS (cont.) ated by a voltage doubler using the PUMPOUT pin as an AC signal and external diodes as switches. PUMP-OUT is a square wave which swings from VCC to GND at half of the OSC frequency. VCC: VCC is the main supply input to the UCC3305. Many functions in the UCC3305 are powered by VCC, while others are powered by BOOST. VCC should be clamped to 6.8V by an external zener diode and kept as close to 6.8V as practical with a low value resistor to the input supply.
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UCC2305 UCC3305 APPLICATIONS INFORMATION (cont.) can be as simple as a high voltage transistor and a resistor pull-up, combined with the correct choice of phases. regulated 10V supply on the BOOST output. This 10V supply drives all other functions on the UCC3305. Regulated Lamp Input Power Gives Constant Intensity Protection From Over Voltage The most significant stresses in an automotive environment are the overvoltage conditions which can occur during load dump and double-battery jump start.
PAGE 8
UCC2305 UCC3305 APPLICATIONS INFORMATION (cont.) time constants are external film capacitors CS and CW, and are connected to SLOPEC and WARMUPC. CS and CW are critical capacitors and must be selected to match the time-temperature relationship of the lamp. When power is removed from the ballast, CS and CW must discharge at a controlled rate. The discharge currents are programmed by current sources on the UCC3305 HID Controller. These current sources are powered by the power supply connected to BYPASS.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties.
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MECHANICAL DATA MPDI008 – OCTOBER 1994 N (R-PDIP-T**) PLASTIC DUAL-IN-LINE PACKAGE 24 PIN SHOWN A 24 13 0.560 (14,22) 0.520 (13,21) 1 12 0.060 (1,52) TYP 0.200 (5,08) MAX 0.610 (15,49) 0.590 (14,99) 0.020 (0,51) MIN Seating Plane 0.100 (2,54) 0.021 (0,53) 0.015 (0,38) 0.125 (3,18) MIN 0.010 (0,25) M PINS ** 0°– 15° 0.010 (0,25) NOM 24 28 32 40 48 52 A MAX 1.270 (32,26) 1.450 (36,83) 1.650 (41,91) 2.090 (53,09) 2.450 (62,23) 2.650 (67,31) A MIN 1.230 (31,24) 1.410 (35,81) 1.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.